[flexcoders] Stop row click on dataGrid

[markgoldin_2000]

Here is my dataGrid:
<mx:DataGrid height="100%" enabled="true" id="blockTrackDetails" 
verticalScrollPolicy="on" 
                rowHeight="22" width="100%" click="rowSelected()">
                <mx:columns>
                        <mx:DataGridColumn headerText="Track" 
dataField="tcrctk"/>
                        <mx:DataGridColumn headerText="Cars #" 
dataField="carnumber"/>
                        <mx:DataGridColumn headerText="Loads" 
dataField="loads"/>
                        <mx:DataGridColumn headerText="empty" 
dataField="empty"/>
                        <mx:DataGridColumn headerText="Tons" 
dataField="tons"/>
                        <mx:DataGridColumn headerText="Feet" 
dataField="feet"/>
                        <mx:DataGridColumn headerText="Reassign" />
                        <mx:DataGridColumn headerText="" 
dataField="tcbkcd" visible="false"/>
                </mx:columns>
        </mx:DataGrid>
How can I prevent from running a click function when a specific column 
was clicked?

Thanks